Speaker Conductive Structure for Larger Magnetic Circuit Volume
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Solution Overview
Problem
The flexible circuit board in existing speakers occupies too much space, limiting the magnetic circuit system and affecting the driving force and acoustic performance due to its lateral arrangement.
Innovation Solution
A speaker design with a conductive structure that includes a main body portion fixed to the frame and a connecting portion extending towards the diaphragm, reducing the space occupied by the flexible circuit board and allowing for a larger magnetic circuit system, enhanced driving force, and improved acoustic performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the flexible circuit board is arranged laterally in the speaker, then the electrical connection is achieved, but the space occupied by the flexible circuit board increases, limiting the magnetic circuit system volume
Solution Approach 1:
The conductive structure transitions from a lateral planar arrangement to a three-dimensional configuration with a connecting portion that bends and extends toward the diaphragm. This spatial reconfiguration reduces the footprint on the lateral plane while maintaining electrical connectivity, thereby increasing the magnetic circuit system volume.
Solution Approach 2:
The conductive structure is divided into distinct functional portions: a main body portion fixed to the frame and a connecting portion that bends toward the diaphragm. This segmentation allows each portion to be optimized independently - the main body for stability and the connecting portion for space-efficient routing.
2Force
If the flexible circuit board occupies more space, then the electrical connection is more stable, but the driving force of the magnetic circuit system becomes insufficient
Solution Approach 1:
By extending the connecting portion in a direction close to the diaphragm rather than laterally, the design reduces the lateral area occupied while maintaining sufficient connection stability. This dimensional change allows the magnetic circuit system to occupy the newly freed space, increasing driving force.
3Weight of moving object
If the speaker is miniaturized, then the portability is improved, but the magnetic circuit system volume is reduced, affecting acoustic performance
Solution Approach 1:
The conductive structure's three-dimensional configuration maximizes the use of vertical and diagonal spaces within the miniaturized speaker housing. This allows the magnetic circuit system to occupy lateral spaces that would otherwise be wasted, maintaining larger volume and better acoustic performance despite overall miniaturization.
Solution Approach 2:
The connecting portion of the conductive structure is positioned to nest within or alongside other speaker components, utilizing otherwise wasted space. This nesting approach allows the magnetic circuit system to expand into available volumes without increasing the overall speaker footprint.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The design minimizes space usage while increasing the magnetic circuit system volume, enhancing driving force, and improving acoustic performance.
Implementation Method 1
a voice coil driving the diaphragm to generate sounds
Implementation Method 2
a conductive structure fixed to the frame and connecting the conductive portion with an external circuit
Data Source
AI summary
The present invention provides a speaker including a frame, a vibration system, and a magnetic circuit system mounted with the frame. The vibration system includes a diaphragm fixed on the frame and a voice coil driving the diaphragm to generate sounds. The diaphragm includes at least one conductive portion. The voice coil is electrically connected to the conductive portion. The speaker further includes at least one conductive structure fixed to the frame and connecting the conductive portion with an external circuit. The conductive structure includes a main body portion fixedly connected to the frame and a connecting portion bending and extending from the main body portion in a direction close to the diaphragm. The connecting portion is electrically connected to the conductive portion. The present invention provides a speaker with a large magnetic circuit volume and better acoustic performance.